2120302305 has 128 divisors (see below), whose sum is σ = 4449116160. Its totient is φ = 946437120.

The previous prime is 2120302291. The next prime is 2120302343. The reversal of 2120302305 is 5032030212.

It is not a de Polignac number, because 2120302305 - 2⁵ = 2120302273 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1185622 + ... + 1187408.

It is an arithmetic number, because the mean of its divisors is an integer number (34758720).

Almost surely, 2^2120302305 is an apocalyptic number.

It is an amenable number.

2120302305 is an abundant number, since it is smaller than the sum of its proper divisors (2328813855).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2120302305 is a wasteful number, since it uses less digits than its factorization.

2120302305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876 (or 1870 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 2120302305 is about 46046.7404383850. The cubic root of 2120302305 is about 1284.6927162212.

Adding to 2120302305 its reverse (5032030212), we get a palindrome (7152332517).

The spelling of 2120302305 in words is "two billion, one hundred twenty million, three hundred two thousand, three hundred five".